40212965 has 16 divisors (see below), whose sum is σ = 53077248. Its totient is φ = 29061696.

The previous prime is 40212943. The next prime is 40212967. The reversal of 40212965 is 56921204.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 40212965 - 2²⁴ = 23435749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40212967) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3527 + ... + 9636.

It is an arithmetic number, because the mean of its divisors is an integer number (3317328).

Almost surely, 2^40212965 is an apocalyptic number.

It is an amenable number.

40212965 is a deficient number, since it is larger than the sum of its proper divisors (12864283).

40212965 is a wasteful number, since it uses less digits than its factorization.

40212965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13228.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 40212965 is about 6341.3693316192. The cubic root of 40212965 is about 342.6010570781.

The spelling of 40212965 in words is "forty million, two hundred twelve thousand, nine hundred sixty-five".